94 gmc sierra 305 wants to quit goin down the road and it doesn't have much power until u hive it a good amount of gas, when it wants to quit the lights flicker

Asked by Jan 13, 2014 at 10:32 AM about the 1994 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB

Question type: Maintenance & Repair

I just changed fuel filter and pump was
supposedly just put in, the vapor canister
line broke need to fix

2 Answers

9,055

Altenator? Lights should not flicker. Check the Battery voltage. Check the battery voltage with the engine running. The differance is how much your altenator is putting out. Battery should be around 12. Running you should be close to 14 or higher. Best option is to load test in both conditions, I use a 100 amp carbon pile battery tester, finds most issues. If the volts look good back to the fuel. Check the fuel pressure, if it's low check the fuel regulator (built into the back of the throttle body). It can be taken apart and check and usually cleaned and re-assembled without a new gaskets. If you have the quick connect fuel lines you may need the disconnect tools (cheap) if they're hex use line wrenches on them. Jegs has upgrade parts for the reg, rock auto has kits. It's usually just dirty thoough. Good Luck.

Best Answer

I'll definitely check both I appreciate the help

Your Answer

Add photo

Related Questions

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,500
#2 John Saffrahn
John Saffrahn
Reputation 3,130
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 2,740
View All

Related Models For Sale

Used Ford F-150
3,396 Great Deals out of 203,564 listings starting at $1,273
Used Dodge Ram 1500
567 Great Deals out of 12,974 listings starting at $1,200
Used Toyota Tacoma
773 Great Deals out of 33,031 listings starting at $1,900
Used GMC Yukon
538 Great Deals out of 17,749 listings starting at $1,777
Used Chevrolet Tahoe
1,068 Great Deals out of 32,278 listings starting at $1,495
Used Chevrolet Camaro
646 Great Deals out of 39,146 listings starting at $2,995

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
7 Great Deals out of 27,289 listings starting at $23,800
2016 GMC Sierra 1500 For Sale
75 Great Deals out of 7,495 listings starting at $19,400
2015 GMC Sierra 1500 For Sale
196 Great Deals out of 4,705 listings starting at $15,999
2014 GMC Sierra 1500 For Sale
188 Great Deals out of 4,418 listings starting at $14,971
2013 GMC Sierra 1500 For Sale
132 Great Deals out of 2,575 listings starting at $11,695